I have resolved the problem, but I do not understand why the solution works. I created the following simple example.
I basically open the file, write four bytes to the beginning of the file, and then read the next 65500 bytes. I need to add a VFSFileSeed before the read or the read fails. error = 0; UInt16 volRef; UInt32 volIterator = vfsIteratorStart; while (volIterator != vfsIteratorStop) error = VFSVolumeEnumerate(&volRef, &volIterator); FileRef fileRef; error = VFSFileOpen(volRef, LinksFullPath, vfsModeReadWrite, &fileRef); error = VFSFileSeek(fileRef, vfsOriginBeginning, 0); UInt32 newData = 1234; error = VFSFileWrite(fileRef, sizeof(newData), &newData, NULL); error = VFSFileSeek(fileRef, vfsOriginBeginning, sizeof(newData)); // why ??? MemHandle blockHandle = MemHandleNew(65500); MemPtr blockPtr = MemHandleLock(blockHandle); UInt32 number; error = VFSFileRead(fileRef, 65500, blockPtr, &number); MemHandleUnlock(blockHandle); MemHandleFree(blockHandle); "palmDev" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > it works fine. it would help if you include some code > that you are using. > > regards > > danny > www.toysoft.ca > > > > ----- Original Message ----- > From: "Laurie Davis" <[EMAIL PROTECTED]> > Newsgroups: palm-dev-forum > To: "Palm Developer Forum" <[EMAIL PROTECTED]> > Sent: Sunday, November 30, 2003 5:52 AM > Subject: VFSFileRead and Simulator > > > > I am having a problem with the VFSFileRead function on the Simulator. > > Whenever > > I try to read a file, the read stops after 4092 bytes. I get an error code > > of 7197. > > I tried reading in smaller chunks, but again it stops after 4092 bytes and > > returns the > > same error code for all subsequent reads. I do not know what this error > > means, but > > since it appears to be just above emuErrorClass, I assume that it is a > > simulator > > specific error. There is also the possibility that the VFSFileWrite did > not > > work > > properly, but there were no error codes, and the file appears to be the > > right size. > > > > Laurie > > > > > > > > -- > > For information on using the Palm Developer Forums, or to unsubscribe, > please see http://www.palmos.com/dev/support/forums/ > > > > > -- For information on using the Palm Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/support/forums/
